diff options
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/arch-ivybridge/microcode.h | 3 | ||||
| -rw-r--r-- | arch/x86/include/asm/mp.h | 94 | ||||
| -rw-r--r-- | arch/x86/include/asm/mtrr.h | 6 | ||||
| -rw-r--r-- | arch/x86/include/asm/processor.h | 3 | ||||
| -rw-r--r-- | arch/x86/include/asm/sipi.h | 86 |
5 files changed, 187 insertions, 5 deletions
diff --git a/arch/x86/include/asm/arch-ivybridge/microcode.h b/arch/x86/include/asm/arch-ivybridge/microcode.h index b868283..67f32cc 100644 --- a/arch/x86/include/asm/arch-ivybridge/microcode.h +++ b/arch/x86/include/asm/arch-ivybridge/microcode.h @@ -7,9 +7,6 @@ #ifndef __ASM_ARCH_MICROCODE_H #define __ASM_ARCH_MICROCODE_H -/* Length of the public header on Intel microcode blobs */ -#define UCODE_HEADER_LEN 0x30 - #ifndef __ASSEMBLY__ /** diff --git a/arch/x86/include/asm/mp.h b/arch/x86/include/asm/mp.h new file mode 100644 index 0000000..c0930fd --- /dev/null +++ b/arch/x86/include/asm/mp.h @@ -0,0 +1,94 @@ +/* + * Copyright (c) 2015 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0 + * + * Taken from coreboot file of the same name + */ + +#ifndef _X86_MP_H_ +#define _X86_MP_H_ + +#include <asm/atomic.h> + +typedef int (*mp_callback_t)(struct udevice *cpu, void *arg); + +/* + * A mp_flight_record details a sequence of calls for the APs to perform + * along with the BSP to coordinate sequencing. Each flight record either + * provides a barrier for each AP before calling the callback or the APs + * are allowed to perform the callback without waiting. Regardless, each + * record has the cpus_entered field incremented for each record. When + * the BSP observes that the cpus_entered matches the number of APs + * the bsp_call is called with bsp_arg and upon returning releases the + * barrier allowing the APs to make further progress. + * + * Note that ap_call() and bsp_call() can be NULL. In the NULL case the + * callback will just not be called. + */ +struct mp_flight_record { + atomic_t barrier; + atomic_t cpus_entered; + mp_callback_t ap_call; + void *ap_arg; + mp_callback_t bsp_call; + void *bsp_arg; +} __attribute__((aligned(ARCH_DMA_MINALIGN))); + +#define MP_FLIGHT_RECORD(barrier_, ap_func_, ap_arg_, bsp_func_, bsp_arg_) \ + { \ + .barrier = ATOMIC_INIT(barrier_), \ + .cpus_entered = ATOMIC_INIT(0), \ + .ap_call = ap_func_, \ + .ap_arg = ap_arg_, \ + .bsp_call = bsp_func_, \ + .bsp_arg = bsp_arg_, \ + } + +#define MP_FR_BLOCK_APS(ap_func, ap_arg, bsp_func, bsp_arg) \ + MP_FLIGHT_RECORD(0, ap_func, ap_arg, bsp_func, bsp_arg) + +#define MP_FR_NOBLOCK_APS(ap_func, ap_arg, bsp_func, bsp_arg) \ + MP_FLIGHT_RECORD(1, ap_func, ap_arg, bsp_func, bsp_arg) + +/* + * The mp_params structure provides the arguments to the mp subsystem + * for bringing up APs. + * + * At present this is overkill for U-Boot, but it may make it easier to add + * SMM support. + */ +struct mp_params { + int num_cpus; /* Total cpus include BSP */ + int parallel_microcode_load; + const void *microcode_pointer; + /* Flight plan for APs and BSP */ + struct mp_flight_record *flight_plan; + int num_records; +}; + +/* + * mp_init() will set up the SIPI vector and bring up the APs according to + * mp_params. Each flight record will be executed according to the plan. Note + * that the MP infrastructure uses SMM default area without saving it. It's + * up to the chipset or mainboard to either e820 reserve this area or save this + * region prior to calling mp_init() and restoring it after mp_init returns. + * + * At the time mp_init() is called the MTRR MSRs are mirrored into APs then + * caching is enabled before running the flight plan. + * + * The MP init has the following properties: + * 1. APs are brought up in parallel. + * 2. The ordering of cpu number and APIC ids is not deterministic. + * Therefore, one cannot rely on this property or the order of devices in + * the device tree unless the chipset or mainboard know the APIC ids + * a priori. + * + * mp_init() returns < 0 on error, 0 on success. + */ +int mp_init(struct mp_params *params); + +/* Probes the CPU device */ +int mp_init_cpu(struct udevice *cpu, void *unused); + +#endif /* _X86_MP_H_ */ diff --git a/arch/x86/include/asm/mtrr.h b/arch/x86/include/asm/mtrr.h index 3841593..3ad617c 100644 --- a/arch/x86/include/asm/mtrr.h +++ b/arch/x86/include/asm/mtrr.h @@ -34,8 +34,10 @@ /* Number of MTRRs supported */ #define MTRR_COUNT 8 -#define NUM_FIXED_RANGES 88 -#define RANGES_PER_FIXED_MTRR 8 +#define NUM_FIXED_MTRRS 11 +#define RANGES_PER_FIXED_MTRR 8 +#define NUM_FIXED_RANGES (NUM_FIXED_MTRRS * RANGES_PER_FIXED_MTRR) + #define MTRR_FIX_64K_00000_MSR 0x250 #define MTRR_FIX_16K_80000_MSR 0x258 #define MTRR_FIX_16K_A0000_MSR 0x259 diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 3575d34..7c77b90 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -23,6 +23,9 @@ #define X86_GDT_SIZE (X86_GDT_NUM_ENTRIES * X86_GDT_ENTRY_SIZE) +/* Length of the public header on Intel microcode blobs */ +#define UCODE_HEADER_LEN 0x30 + #ifndef __ASSEMBLY__ /* diff --git a/arch/x86/include/asm/sipi.h b/arch/x86/include/asm/sipi.h new file mode 100644 index 0000000..25d7d31 --- /dev/null +++ b/arch/x86/include/asm/sipi.h @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2015 Gooogle, Inc + * Written by Simon Glass <sjg@chromium.org> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _ASM_SIPI_H +#define _ASM_SIPI_H + +#define AP_DEFAULT_BASE 0x30000 +#define AP_DEFAULT_SIZE 0x10000 + +#ifndef __ASSEMBLER__ + +/** + * struct sipi_params_16bit - 16-bit SIPI entry-point parameters + * + * These are set up in the same space as the SIPI 16-bit code so that each AP + * can access the parameters when it boots. + * + * Each of these must be set up for the AP to boot, except @segment which is + * set in the assembly code. + * + * @ap_start: 32-bit SIPI entry point for U-Boot + * @segment: Code segment for U-Boot + * @pad: Padding (not used) + * @gdt_limit: U-Boot GDT limit (X86_GDT_SIZE - 1) + * @gdt: U-Boot GDT (gd->arch.gdt) + * @unused: Not used + */ +struct __packed sipi_params_16bit { + u32 ap_start; + u16 segment; + u16 pad; + u16 gdt_limit; + u32 gdt; + u16 unused; +}; + +/** + * struct sipi_params - 32-bit SIP entry-point parameters + * + * These are used by the AP init code and must be set up before the APs start. + * + * The stack area extends down from @stack_top, with @stack_size allocated + * for each AP. + * + * @idt_ptr: Interrupt descriptor table pointer + * @stack_top: Top of the AP stack area + * @stack_size: Size of each AP's stack + * @microcode_lock: Used to ensure only one AP loads microcode at once + * 0xffffffff enables parallel loading. + * @microcode_ptr: Pointer to microcode, or 0 if none + * @msr_table_ptr: Pointer to saved MSRs, a list of struct saved_msr + * @msr_count: Number of saved MSRs + * @c_handler: C function to call once early init is complete + * @ap_count: Shared atomic value to allocate CPU indexes + */ +struct sipi_params { + u32 idt_ptr; + u32 stack_top; + u32 stack_size; + u32 microcode_lock; + u32 microcode_ptr; + u32 msr_table_ptr; + u32 msr_count; + u32 c_handler; + atomic_t ap_count; +}; + +/* 16-bit AP entry point */ +void ap_start16(void); + +/* end of 16-bit code/data, marks the region to be copied to SIP vector */ +void ap_start16_code_end(void); + +/* 32-bit AP entry point */ +void ap_start(void); + +extern char sipi_params_16bit[]; +extern char sipi_params[]; + +#endif /* __ASSEMBLER__ */ + +#endif |